Welcome to StudyStack, where users create FlashCards and share them with others. Click on the large
flashcard to flip it over. Then click the green, red, or yellow box to move the current card to that box.
Below the flashcards are blue buttons for other activities that you can try to study the same information.

Free flashcards for serious fun studying. Create your own or use sets shared by other students and teachers.

To flip the current card, click it or press the Spacebar key.
To move the current card to one of the three colored boxes, click on the box. You may also
press the UP ARROW key to move the card to the Correct box, the DOWN ARROW key to
move the card to the Incorrect box, or the RIGHT ARROW key to move the card to the Remaining box.
You may also click on the card displayed in any of the three boxes to bring that card back to the
center.

WGU INC1 11/2010

Integrated Natural Science

A general hypothesis or statement about the relationship of natural quantitites that has been tested over and over again and has not been Contradicted.

Scientific method

An orderly method of gaining organizing and applying new knowledge.

Theory

A synthesis of a large body of information that encompasses well-tested hypotheses about certain aspects of natural world.

Fact

A phenomenon about which competent observers can agree.

Technology

The means of solving practical problems by applying the findings of science.

Newton

The scientific unit of force.

Air Resistance

The force of friction acting on an object due to its motion through air.

Kilogram

The unit of mass. Equals the mass of 1 liter of water at 4C.

Velocity

The speed of an object with specification of its direction of motion.

Inertia

The property of things to resist changes in motion.

Acceleration

The rate at which velocity changes with time; the change in velocity may be in magnitude or in direction or both. It is usually measure in m/s2.

Mass

The quantitiy of matter in an object.

Speed

The distance traveled per time.

Hypothesis

An educated guess or a reasonable explanation.

Force

Simply stated a push or pull.

Support Force

The force that supports an object against gravity often called the normal force.

Vector quantity

A quantity that specifies direction as well as magnitude.

Science

The collective findings of humans about nature and a process of gathering and organizing knowledge about nature.

Friction

The resistive force that opposes the motion or attempted motion of an object through a fluid or past another object with which it is in contact.

Weight

Simply stated the force of gravity on an object.

Control

A test that excludes the variable being investigated in a scientific experiment.

Net Force

The combination of all forces that act on an object.

Equilibrium rule

Rule which states that the vector sum of forces acting on a nonaccelerating object equals zero: SF=0

Psudoscience

A theory or practice that is considered to be without scientific foundation but purports to use the method of science.

Principle of Falsifiability

For a hypothesis to be considered scientific it must be testable-it must in priciple be capable of being proven wrong.

System

a combonation of components form a complex organization.

inductive reasoning

generalizations based on a large number of specific observations.

Deductive reasoning

logic flows in the opposite direction from general to the specific.

Biology

is the study of living organisms

Chemistry

concerned with the composition structure and properties of matter as well as the changes it undergoes during chemical reactions.

Physics

the study of motion or change

Geology

the study of the solid and liquid matter that is the earth.

Astronomy

one of the oldest sciences the study of celestial objects and phenomena that originate outside the earths atmosphere.

Limitations of science

Science can not determine valueScience can not answer questions of moralitySuper-natural

Ways that simple machines affect force output?

transfers a force from one place to anotherchanges the direction of a forceincreases the magnitude of a forceincreases the distance or speed of a force

Examples of simple machines

lever wheel and axel pulley inclined plane wedge

Grams

measures mass base unit is kilogram

liters

measures volume

micrometer

one millonth of a metere also known as a micron

Km/hr

kilometeres per hour is unit of both speed and velocity.

millimeters

a unit of lenght equal to the one thousandth of a meter.

ampere

the SI unit of electric current. The measure of the amount of electric charge passing a pint per unit time.

ph units

instrument used to test the acidity or alkalinity of a liquid

Volts

measures voltage

ohms

measures resistance

joules

the derived unit of energy in the International system of units.

millivolts

a unit of potential equal to one thousandths of a volt

nanometer

one thousand-millonth of a meter

kilogram

unit of mass equal to 1000 grams

Kelvin

a unit of absolute temperature one kelvin degree is equal to one celsius degree

meters

standard unit of length

watts

a system unit of power equal to one joule per second

Inverse-square law

Law relating the intensity of an effect to inverse square of the distance from the cause: Intensity- 1/distance2.

Ellipse

The sum of the distances from any point on the path to two points called foci is a constant; also the oval path followed by a satellite.

Projectile

Any object that moves through the air or through space under the influence of gravity.

Parabola

The curved path followed by a profectile near the Earth under the influence of gravity only

Satellite

A projectile or small body that orbits a larger body.

Tangential velocity

Velocity that is parallel(tangent) to a curved path.

Centripetal force

Any force that is directed at right angles to the path of a moving object and tends to produce circular motion.

Gravitational Force

The force of attraction between all masses in the universe.

Nebular theory

the idea that the sun and planets formed from a cloud of gas and dust a nebula

Electrical force

positive and negative attract eachother and repel themselves.

Direct current

an electrical current flowing in one direction only

Alternating current

alternates back and forth

projectile motion

path defined by a projectile

resistor

an electrical device that resists the flow of electrical current

Electromagnet

type of magnet whose magnetic field is produced by the flow of electric current

Potential Energy

the mechanical energy that a body has by virtue of its position; stored energy

amplitude

height of a wave

wavelength

The distance between consecutive crests of a wave

frequency

Frequency is the number of occurrences of a repeating event per unit time

refraction

the change in direction of a propagating wave (light or sound) when passing from one medium to another

diffraction

when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands

reflection

propagating wave (light or sound) being thrown back from a surface

spectral lines

Physics

the science of matter and energy and their interactions

cosmology

study of the origin and nature of the universe

cosmic background radiation (CMB)

Protostar

Main-sequence sta

Burns hydrogen as its primary fuel

Red Giant Star

Burns helium as its primary fuel

White Dwarf Star

Near the final stages of evolution

thermonuclear fusion in a helium-burning star

Two helium nuclei are combined to form one hydrogen nucleus, releasing light energy.
B. Two helium nuclei are burned in the presence of oxygen to produce four hydrogen nuclei, releasing carbon dioxide and light energy.
C. Two helium nuclei are separat